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Combustion of propanol-glycerol mixture droplets in reduced gravity

Published on Oct 1, 2004in International Journal of Heat and Mass Transfer4.35
· DOI :10.1016/j.ijheatmasstransfer.2004.05.025
V. Dee1
Estimated H-index: 1
(UC Davis: University of California, Davis),
Benjamin D. Shaw13
Estimated H-index: 13
(UC Davis: University of California, Davis)
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Abstract
Abstract Reduced-gravity experiments on combustion of propanol–glycerol mixture droplets were performed. Droplets were initially about 1 mm in diameter with initial glycerol mass fractions of 0, 0.05 and 0.2. All experiments were in air at standard temperature and pressure. Experiments showed flame contractions, and data on burning rates and onset times for flame contraction allowed effective species diffusivities to be estimated. Comparison of the experiments with computational modeling suggests that convective mixing was likely present in the droplets. Propanol–glycerol droplets sometimes exhibited extinction after flame contraction. This behavior has been previously observed only for much larger droplets burned in space-based experiments.
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  • Citations (19)
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References27
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Cited By19
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Published on Jun 14, 2019in Renewable Energy5.44
Ena Marlina (Islamic University), Widya Wijayanti4
Estimated H-index: 4
+ 1 AuthorsI.N.G. Wardana2
Estimated H-index: 2
Abstract Vegetable oils consist of glycerol and three variants of fatty acid. Each fatty acid gives different influence on ignition process which is important to be studied. Generally, fatty acids are categorized into polar and nonpolar fatty acids. Both of them have straight and bent molecule geometry. Their roles on evaporation and ignition are discussed based on their polarity and geometry. The study was done with a single droplet from various vegetable oils. Results show polar fatty acids ar...
Published on Sep 2, 2017in Combustion Science and Technology1.56
Hendrix Y. Setyawan5
Estimated H-index: 5
(UWA: University of Western Australia),
Mingming Zhu15
Estimated H-index: 15
(UWA: University of Western Australia)
+ 1 AuthorsDongke Zhang36
Estimated H-index: 36
(UWA: University of Western Australia)
ABSTRACTThe effect of soap on the ignition and combustion characteristics of single droplets of glycerol was studied experimentally. Soap was added into a pure glycerol, both as by-products of biodiesel manufacturing, at concentrations of 1 wt% to 5 wt%. A single droplet of glycerol with and without soap addition was suspended on the tip of a silicon carbide fiber and exposed to air at 1023 K in an electrically heated tube furnace. The ignition and combustion behavior of the droplet was recorded...
Published on Jan 1, 2017
Mingming Zhu15
Estimated H-index: 15
(UWA: University of Western Australia),
Zhezi Zhang12
Estimated H-index: 12
(UWA: University of Western Australia)
+ 3 AuthorsDongke Zhang36
Estimated H-index: 36
(UWA: University of Western Australia)
Abstract The ignition and combustion behaviour of single droplets of biochar-glycerol-water slurry fuels was experimentally investigated. A pine sawdust biochar with a median particle size (D 50 ) of approximately 12 µm was used. The slurry fuels with a constant biochar loading of 42wt% and glycerol/water ratios varying from 0 to 0.5 by weight were prepared. A single droplet of a slurry fuel with diameter ranging from 0.5 mm to 2.0 mm was suspended on a silicon carbide fibre and burned in air at...
Published on Nov 1, 2016in Fuel5.13
Mario Angeloni1
Estimated H-index: 1
(CSIC: Spanish National Research Council),
Pilar Remacha1
Estimated H-index: 1
(CSIC: Spanish National Research Council)
+ 1 AuthorsJavier Ballester22
Estimated H-index: 22
(CSIC: Spanish National Research Council)
Abstract The objectives of the work are, first, to determine the combustion characteristics of crude glycerol, a by-product of the synthesis of biodiesel and, second, to systematically investigate the relationship between the behaviors observed and the presence of different components. With that purpose, the combustion of droplets of crude glycerol was studied in a drop tube facility and compared with different blends of pure glycerol with water, alcohol and salts. The evolution of drop size was...
Published on Apr 20, 2016
Coconut oil combustion characteristic is observed experimentally by evaporating oil in the boiler then mix it with air before being burned at various equivalence ratios in the Hele-shaw cell. The result shows that, coconut oil tends to break into glycerol and fatty acid due to hydrolysis reaction producing the flame propagation, where the fatty acid flame propagates first then glycerol flame. Micro-explosion occurs when moisture from fatty acid combustion is absorbed by glycerol , and higher hea...
Published on Jul 1, 2015in Microgravity Science and Technology1.97
C. L. Vang1
Estimated H-index: 1
(UC: University of California),
Benjamin D. Shaw13
Estimated H-index: 13
(UC: University of California)
Results from International Space Station experiments on combustion of n-propanol/glycerol droplets are reported. The initial n-propanol mass fraction was 0.95 and droplets had initial diameters in the 2 – 5 mm range. Some droplets were fiber supported while others were free floating, and the environment was either an oxygen/nitrogen mixture at 1 atm or an oxygen/helium mixture at pressures of 1 and 3 atm. The droplets burned in a multi-stage manner where n-propanol was preferentially evaporated ...
Hadi Saroso1
Estimated H-index: 1
,
I.N.G. Wardana2
Estimated H-index: 2
+ 1 AuthorsNurkholis Hamidi5
Estimated H-index: 5
Coconut oil combustion characteristic is observed experimentally by evaporating oil in the boiler then mix it with air before being burned at various equivalence ratios in the Hele-shaw cell. The result shows that, coconut oil tends to break into glycerol and fatty acid due to hydrolysis reaction producing the flame propagation, where the fatty acid flame propagates first then glycerol flame. Micro-explosion occurs when moisture from fatty acid combustion is absorbed by glycerol and higher heati...
Published on Dec 1, 2013in Aiche Journal3.46
Christopher D. Rosebrock5
Estimated H-index: 5
,
Norbert Riefler12
Estimated H-index: 12
+ 2 AuthorsStephen D. Tse20
Estimated H-index: 20
Flame spray pyrolysis is an established technique for synthesizing nanoparticles in the gas phase through aerosol combustion of precursor/solvent droplets. The combustion characteristics of isolated micron-sized precursor/solvent droplets are investigated experimentally. Pure solvent droplets burn uniformly and classically quasisteady, whereas precursor/solvent droplets manifest disruptive combustion behavior. The fast onset of droplet disruption, which occurs only for solutions with dissolved m...
Published on Jan 1, 2013in Advanced Studies in Theoretical Physics
Hadi Saroso1
Estimated H-index: 1
,
Ing Wardana4
Estimated H-index: 4
+ 1 AuthorsNurkholis Hamidi5
Estimated H-index: 5
Published on Sep 1, 2012in Renewable & Sustainable Energy Reviews10.56
Mayank Gupta3
Estimated H-index: 3
(DCE: Delhi Technological University),
Naveen Kumar18
Estimated H-index: 18
(DCE: Delhi Technological University)
Biodiesel is a promising fuel for diesel engines in wake of its renewable nature and environmental benefits. Biodiesel can be produced by different pathways; however, glycerol (or glycerin, glycerin) is a valuable by-product which is formed during this process. As mandates are being enforced by different government worlds over, the demand of biodiesel is likely to go up. With increased demand and production of biodiesel, significant quantity of glycerol shall be available. There is an urgent nee...
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